Sealed quilted material



June 1934- c. s. SMALLISH SEALED QUILTED MATERIAL Filed Aug. 8, 1931INVENJI'OR 8 1 BY 7% ATTORNEY Patented June 19, 1934 SEALED QUILTEDMATERIAL Clarence Stanley Smallish, I Newark, N. J assignor to AmericanHair & Felt Company, Chicago, Ill., a corporation of DelawareApplication August 8,

1 Claim.

The invention relates to a new article of manufacture, a sealed, quiltedmaterial.

In the forming of quilted materials, such as structural insulatingmaterials formed of a layer of fiber enclosed between two layers ofsheet material united with stitches at spaced intervals, it is desirableto seal the said stitches to prevent air infiltration. In my copendingapplication, Serial No. 547,527, I have disclosed a 'process for theformation of such sealed material. The present invention relates tocertain material, made according to the aforesaid process, of superiorquality, which can be manufactured with greater facility. Said materialis made in the manner disclosed in said copending application or in anyother suitable manner and consists of a layer of soft animal orvegetable fiber loosely matted together and faced on either side with alayer of special sheet material whose surface is specially adapted forthe reception of a sealing compound. The layer of fiber and the facingsare united with stitches at spaced intervals and the stitches are sealedwith a composition of water and soluble sodium silicate or a compositionof glue, either animal or vegetable, or any other suitable substance.

In describing the article of manufacture of this invention reference ismade to the attending drawing in which Fig. 1 is a perspective view ofthe article;

Fig. 2 is a cross-section thereof, taken at the line 2-2;

Fig. 3 is a partial section of old material;

Fig. 4 is a detail view of the sheet material employed with the variouslayers thereof separated and exposed.

The material as shown in Fig. 1 consists of the principal layers ofsheet material 2 and 3 which enclose the other principal layer 4 ofloosely matted fiber. The whole is united by the stitching 9 and sealedwith the sealing substance 10.

The sheet material used for enclosures prior to this invention has beencomposed of heavy paper quite thoroughly impregnated with asphalt orother pitchlike material. The quilted article when formed withimpregnated paper is not entirely satisfactory. Important mechanicalproperties of impregnated paper, such as tearing strength andpliability, vary with temperature and a compromise in the selection ofthe impregnating substance is necessary. The paper is only well suitedfor the purpose over a range of temperaturethe selection of which rangeis a matter of judgment. In the manufacture 1931, Serial No. 555,942

of quilted materials according to the method outlined in my copendingapplication, Serial No. 542,527, wherein the stitches are sealed toprevent air infiltration, a further very important defect in impregnatedpapers occurs. This de- 69 feet consists in the water-repellant natureof the pitch-impregnated surface. The application of the sealingsubstance to the immediate vicinity of the stitches, according to theprocess outlined in the aforesaid copending application, 5 should beaccomplished with great rapidity. The sealing substances mostconveniently used contain water. The great rapidity of application whereimpregnated paper is employed often results in a condition such as isrepresented in 7% Fig. 3. In this case the mass of the sealing substance8, repelled by the impregnated surface, forms spherical dropletsadhering only to the stitching fibers 9. This condition can be partiallyremedied by mechanically forcing the 71S. sealing substance against theimpregnated surface, but the same is not entirely satisfactory andimperfect sealing results unless precautions of prohibitive cost areemployed.

In contrast with the above the article of manu- 8Q facture of thisinvention employs for the principal layers 2 and 3 a sheet material suchas is shown in Fig. 4. This material is composed of the layers 5 and 6of nonimpregnated, heavy paper united by the bituminous, asphaltic orcementitious layer 7. The paper employed is preferably of the crepetype, being made of ground, kraft process or any suitable pulpcontaining, if desired, goat hair or similar reenforcing material. Thepaper preferably is made with little or no sizing. The 96,12 creping ofthe sheet may be accomplished by striking the wet sheet against thedoctor knife during manufacture or by any other means. The two sheets ofcrepe paper thus united by a cementitious substance form a materialwhich is 95,3 relatively impervious to air infiltration and which hassuperior properties with respect to flexibility, tearing strength, etc.,the properties being satisfactory over a wider range of temperatures. Inaddition, such paper, in direct contrast to the im- IQQ pregnated type,is thirsty or receptive with respect to scaling substances which containwater. Almost instantly upon contact of the sealing material with a rowof stitches the sealing material spreads and adheres as indicated at 10in Fig. 2.

The material of this invention exhibits a novel perfection of scalingfor this class of quilted article. Great economy is possible in itsmanufacture, dueto the fact that natural forces aid instead of hinderthe fabrication thereof. It is known 1131;

arr-

that materials comprising paper facings inclosing matted fiber have beenfabricated by uniting the same with fibers transversing the whole andthat cementitious substances have been applied to the paper facing anduniting fibers. However, such material has been made with thecementitious substance spread over the entire surface of the paper.The'article of this invention purposely avoids the same, confining thesealing material locally to only a small portion of the area. Theconfining of the sealing substance locally results in a material of fargreater strength, pliability what less satisfactory material may be madeby using ordinary impregnated paper for one of the faces, the seal beingapplied to the other face.

Herein the term bat of fiber is employed as meaning a lamella composedof one or more layers of loosely matted or felted animal or vegetablefibers.

Itis desired that it be understood that this invention is not to belimited to any specific form or arrangement except insofar as suchlimitations arespecified in the claim.

What I claim as my invention is:

A quilted material consisting in a bat of fiber faced on each side withsheet material, the sheet material on one of" the faces beingimpregnated paper, the sheet material on the other face consisting intwo layers of non-impregnated paper with-cementi-tious materialtherebetween, spaced rows of. stitches uniting the whole, and a sealingsubstance adhering to the portions of the stitches exposed on thenon-impregnated paper side and to the contiguous surface of thenon-impregnated p per.

CLARENCE STANLEY SMALLISH.

